(http://bugs.debian.org/212086). Patch by Domenico Andreoli.

multiple DNS lookups can run simultaneously faster. The downside is that
resolving the same host name now can be made at once from multiple threads,
but the upside is that threads now don't alwys have to wait for the others'
resolves. Test case 506 updated accordingly.

an HTTP download, then reset CURLOPT_RESUME_FROM to 0, the next download still
has a Range header with a garbage value." bug report #820502

  addresses, if one of them fails (ipv4-code).

  subjectAltNames when matching certs. This is apparently detailed in RFC2818
  as the right thing to do. I had to add configure checks for inet_pton() and
  our own (strictly speaking, code from BIND written by Paul Vixie) provided
  code for the function for platforms that miss it.

Jeremy Friesner.

* several tests ALWAYS failed due to bad test programs
* the IoctlSocket() test now is linked on test as it could otherwise compile
  fine on many systems that doesn't support it
* added a test for the BeOS way of doing non-blocking sockets (based on a
  patch from Shard)

  and then set it to NULL in a subsequent one, the previous cookie was still
  sent off!